Individual refinery capacity varies dramatically, from smaller regional plants processing tens of thousands of barrels per day to massive complexes handling over 600,000 barrels daily. Individual refinery capacity varies dramatically, from smaller regional plants processing tens of thousands of barrels per day to massive complexes handling over 600,000 barrels daily.
Midwest Refinery Cluster: Ohio, Indiana, and Illinois Capacity and Key States
This area accounts for over 50% of the nation's total refining capacity, hosting the largest and most complex refineries capable of processing heavy crude oils. Region Number of Refineries Key States Gulf Coast ~60 Texas, Louisiana, Mississippi West Coast ~15 California, Washington, Oregon Midwest ~35 Illinois, Ohio, Indiana East Coast ~15 New York, Pennsylvania, New Jersey Rocky Mountains ~5 Colorado, Wyoming Other ~5 Various Capacity and Operational Scale \ The 135 refineries collectively process an average of approximately 18 million barrels of crude oil per day.
These refineries are not distributed evenly; they are concentrated heavily along the Gulf Coast, the West Coast, and the Midwest, creating distinct regional hubs for petroleum processing. Refinery conversions to process different crude types or produce renewable fuels are becoming more common, indicating an adaptation to future energy landscapes.
Midwest Refinery Cluster: Ohio, Indiana, and Illinois' Key Role
The Midwest, particularly around Illinois and Ohio, supports a network of refineries focused on processing lighter crude grades and supplying regional fuel distribution centers. Geographic Distribution of Facilities Gulf Coast Dominance The Gulf Coast region, encompassing states like Texas, Louisiana, and Mississippi, is the undisputed heart of American refining.
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